Translation:Every day, tourists depart from Hungary by boat.
I thought it was more a joke about people who escape taxes on boats and ships by registering them in landlocked countries.
The could also depart for day trips on lake Balaton (has a lot of tourism)
The danube is crowded with ships, you have no idea how many of them you can see in one day.
I think that both should work. IMO, according to PIV definitions, de stresses the meaning of “point” and el that of “space” of origin of the movement. (Of course, one needs a very small scale map to consider Hungary as a point!)